论文标题
CALICA调查中的HII地区：I。目录演示文稿
HII regions in the CALIFA survey: I. Catalog presentation
论文作者
论文摘要
我们基于扩展的CALIFA和PISCO样品的积分田间光谱（IFS）数据提供了HII区域的新目录。 HII区域的选择是基于两个假设：一个块状结构，其对比度高H $α$排放和一个包括年轻恒星的恒星人群。该目录提供了与924个星系相对应的26,408个单个区域的光谱信息，包括通量强度和51个发射线的等效宽度，覆盖了3745-7200A之间的波长。据我们所知，这是HII地区光谱特性的最大目录。我们探索了一种新的方法，可以从扩散的离子气体贡献中净化发射线。估计这种弥漫性气体校正以校正所考虑光谱范围内的每条排放线。通过校正HII区域的目录，为经典诊断图提出了新的分界线。最后，我们研究了HII区域的基本恒星种群的特性。发现除了离子化区域的物理条件外，星云上的电离条件与恒星种群的特性之间存在直接关系。
We present a new catalog of HII regions based on the integral field spectroscopy (IFS) data of the extended CALIFA and PISCO samples. The selection of HII regions was based on two assumptions: a clumpy structure with high contrast of H$α$ emission and an underlying stellar population comprising young stars. The catalog provides the spectroscopic information of 26,408 individual regions corresponding to 924 galaxies, including the flux intensities and equivalent widths of 51 emission lines covering the wavelength range between 3745-7200A. To our knowledge, this is the largest catalog of spectroscopic properties of HII regions. We explore a new approach to decontaminate the emission lines from diffuse ionized gas contribution. This diffuse gas correction was estimated to correct every emission line within the considered spectral range. With the catalog of HII regions corrected, new demarcation lines are proposed for the classical diagnostic diagrams. Finally, we study the properties of the underlying stellar populations of the HII regions. It was found that there is a direct relationship between the ionization conditions on the nebulae and the properties of stellar populations besides the physicals condition on the ionized regions.
